Conceptual Design of a Helical Undulator for a TESLA SASE FEL
نویسندگان
چکیده
In this paper we discuss some design issues for a helical undulator which covers the energy range between 500-3000 eV at an electron energy of 23 GeV. The design is based on the technology of the BESSY II helical devices. Other technologies might be also applicable but will not be considered here. At BESSY II two helical double undulators are already in operation and 2 more helical devices are currently under construction [1].
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